Baling-press.



C. L. NORTH.

BALING Pnsss.

APPLICATION FILED FEB. 9| |915.

CLARENCE L. NORTH, 0F EL PASO, TEXAS.

BALING-PRESS.

Application led February 9, 1915.

To all whom t may concern:

Be it known that I, CLARENCE L. NORTH, a citizen of the United States, and a resident of El Paso, in the county of El Paso and State of Texas, have made certain new and useful Improvements in Ealing-Presses, of which the following is a specification.

My invention is an improvement in baling presses and has for its object to provide a press of the character specified, especially designed for forming hay, straw, cotton, paper', or like material into compressed, compact bales, wherein the pressure is brought about by means of a compound cam movement, requiring a minimum of power for a maximum of compression.

In 'the drawings Figure l is a longitudinal vertical section of the improved press, showing the parts in one position,

Fig. 2 is a similar view showing the parts in another position,

Fig. 3 is a section on the line 3 3 of Fig. 2, looking in the direction of the arrows adjacent to the line,

Fig. 4 is a perspective view of the cam, and

Fig. 5 is a side view of the same and the plunger rod, showing the operation of the cam.

The present embodiment of the invention comprises a baling chamber 1 open at each end and having a hopper-shaped inlet 2 in its top and the baling chamber has an extension 3 at one end from each side wall. A shaft 4 is journaled transversely of the baling chamber in the extensions and in sectional bearings 5 secured to the extensions by bolts and nuts 6. It will be seen from an inspection of Fig. 3 that the extensions are channel plates, arranged with their channels outward and the sectional bearings 5 are bolted to the upper flanges of the channel plates.

A gear wheel 7 is secured to one end of the shaft 4 outside of the adjacent extension by means of a key 8 and the gear wheel 7 meshes with a pinion 9 on a driving shaft l0 also journaled transversely of the extensions and parallel with the shaft 4. The sha-ft l0 is adapted for connection with any suitable source of power for operating the Specification of Letters Patent.

Patented Mar. 12, 1918.

Serial No. 7,020.

same, and it will be evident that when the shaft 10 is rotated the shaft 4 will be driven at a lower rate of speed.

The plunger 11 is secured to one end of a cylindrical plunger bar 12, and a coil spring 13 is arranged between the plunger and an angle bar 14 which connects the outer ends of the extensions.V The spring acts normally to draw the plunger rearwardly. The spring' 13 is connected at its ends to hooks 15 at the center of the lower end of the plunger and on the cro-ss bar 14 respectively. The plunger rod 12 has a reduced extension 122L at the end remote from the plunger, which passes through a stuling box 16a in the inner end of a cylinder 16 which is held by means of the cross bar 14 coaxial with the plunger rod.

The extension 12aL has a piston 19 within the cylinder and it will be noticed that the cylinder is of larger internal diameter at the end adjacent to the baling chamber than the piston. The piston is guided at the axis of the casing by guides 22, the said guides being in the shape of wings or vanes extending longitudinally of the cylinder within the same and the inner edges of the vanes are engaged by the periphery of the piston and guide the piston. Four wings or vanes are provided.

At the end remote from the baling chamber the cylinder is internally reduced as indicated at 17, making' this portion of the interior of the cylinder of frusto-conical shape and the extreme outer end of the cylinder is again cylindrical, as indicated at 17a. Thus the frusto-conical or tapering portion 17 connects the cylindrical portions 16 and 17a ot' the cylinder.

Grooves 18 are arranged in the tapering portion, the said grooves extending longitudinally of the cylinder from the cylindrical portion 16 to the cylindrical portion 17'a and the grooves gradually decrease in cross section. The portion 17au of the cylinder is of the same diameter as the piston and the grooves 18 extend to the commencement of this portion. The cylinder is adapted to hold oil and a filling nipple 2O is provided for permitting the cylinder to be filled, the nipple being normally closedby a cap 21 which is threaded thereon. On the reverse levers 38 'are connected at 4one end to the stroke of theplunger, the piston 19 may move freely through the cylinder 16 until it reaches the commencement of the tapering portion 17.

The spaces between the guides 4 are of sutiicient size to permit the oil to pass the piston `without appreciably 'slowing' the travel thereof. When, however, the piston strikes the `commencement of the tapering portion 17, the oil finds increasing difficulty in passing the piston because of the gradualV- contraction of the ports, that is, the grooves 18 and the piston will be checked at the connfnencementA of the cylindrical portion 17a.

The plunger is supported intermediate its ends by a grooved roller 23, arranged on a shaft 24 extending transversely between the extensions 3 and by flanged wheels 25 which arev journaled on the ends of a shaft 26, arranged diametrically of the plunger rod 12. Each wheel engages a track bar 27 Vsecured to "the adjacent lextension 3 `by means of rivets 28 and collars or arbors 29 are arranged on the rivets between the track bars and the'extensions' toy space the track bars inwardly. VThe flanges of the wheel are on the-inner sides thereof and the wheelsy move on the 'trackbars It will be noticed that the trackjbars extend from the inner end of thepacking chamber to a little beyond the shaft 4. Y

Three Ycams are mounted on the shaft 4, namely a vca'ml30 and a pair of cams 31. Each of thecams 30 and 31 has a hub 32 provided with a key way 33 for engagement by a'key to key the cams to the shaft 4an'd the cams are mounted on the shaft between the bearings 5.y The cam 30 is adapted to move through a longitudinal slot 34 in theplunger rod, "anda roller 35 is journale'd in the slot" at the end adjacent to the baling chamber for engagement by the said cam. The

i cams 31 engage rollers 36 on the shaft 26 before mentioned, at opposite sides of the plunger rods, and the cams move the plun- 'er rod 'and plunger in the same directions. lhe cams 31 are similar and in register and theyv are arranged on opposite sides of the cam30. f

The material to be fed is fed to thebalin lchamber lthrough thehopper and a fork 3 is provided for pressing 'the' material from. the'hopperinto thebaling chamber. The fork iss'uppo'rted byV a pair of straight levers 38 and a pair of curvedlevers 39. A pin or at the end remotfe ,fromthe tines and the ends 'of the rod'. Each lever is pivoted at its inner endjto an Aishaped bracket 43, the said'n'bralckets being 'upright' atopposite sides of the frainenand connectedto the inner wall' of the hopper andtothe'adjacent extensioml The levers 39:"are,ffonnected to the fork.,in Y termediate" the' ends theref as"`ind`icrated at l Vend of the lever 42 is pivoted to a shaft 45 arranged transversely of the baling chamber and journaled at its ends in the A-shaped brackets, and the outer end of the member 42a ofgtlie ypair is pivoted to the plunger as indicated at 46, the plunger having a recess in its upper side for receiving Vthe said end of the toggle lever. y

An eye ybolt 47 is 'connectedvwith theshaft 45,'theeye'of the bolt embracing the shaft and a coil spring 48 encircles the bolt between' an adjustable stop 49 on theouter end thereofand amovable plate 50 which is engaged bythe edge of the lever 39. The stop 49 is constituted by awasher and a nutand by meansof theV nut the stop maybe adjusted to regulate-the tension of the spring.Y The operation'of the device is as follows: j

The shaft 10 is rotated by anysuitable source ofV power, as for instance by a motor,

and as the shaft is rotated the shaft 4 will j be rotated' at a greatly reduced speed.` The material to be baled is fed into the hopper f are in the position of Eig. 2, that is, when the plunger is at-the end of its baling stroke, at which time the feeding fork 37 is lifted out lof the way so that the material maybe inserted through the hopper.'

A shield or hood 51 is arranged above the 4 2 and the material is inserted when the parts plunger and on the inner side thereof, theV Y said 'shield being'supported by the` plunger and a pair of angle brackets 52.V The angle brackets are arranged on opposite sides of u,

the plunger' rod 12 and each bracket consistsV of two portions arranged atl an acute angle l with respect to each other.

The longer portion ,is approximately horizontal inclining upwardly, however, slightly toward the vertical Vportion andthe end of the .said"portion is secured tothe rearor inner f ace of iii 0 the plunger'. u The shield or hood is thus supported in an Vinclined position inclining upwardly toward its inner side edge and it isv v of such length ythat whenthe plunger is atVA the end of its 4baling stroke the inner end Vof the shield win be behind the einer 'Wan of.; the opening. Theshield thus provides a cover or closure to prevent the material fall- Y p ,ing behind the plunger.A rod 41 isarranged transversely of the fork ,Y

The material fed into the hoppenrests upon the hood or shield 51 and as the plunger is moved on the reverse stroke the shield;

Y or hoodn moves yout from beneaththe' material and at thesame' time the feeding forkis swung` downwardlyk vinthe position of Fig.V

d onthebalingrstroke thefeedf.

V,1 to forc'e the material already in the hopper' l into the haling chamber,

As the plunger 'move' for comes beneath the lower end of the hopper to support the material until the plunger is retracted.

lVith the parts in the position of Fig. 1, a quantity of material has just been fed into the baling chamber and the plunger is ready to start forward on its baling stroke. The cams 30 and 31 are T-shaped in cross section, in order to strengthen the same, each consisting, as shown, of a cam surface and a central bracing web integral therewith and at right angles thereto. This cam surface engages the rollers 35 and 36, the cam 30 engaging the roller 35, while the cams 31 engage the rollers 36. As the shaft a is rotated with the parts in the position of Fig. 1, the operative edge of the cams 31 engage the rollers 36 at each side of the plunger rod, and as the shaft continues to rotate the plunger is moved forward on its baling stroke. This forward movement continues and when the cams 31 are just about to move out of engagement with the rollers 36, the operative edge of the cam 30 comes into contact with the roller 35 and supplements the action of the cams 31 to continue and complete the forward motion of the plunger.

At the end of the baling stroke the cam 30 passes out of engagement with the roller 35 and at this moment the cams 31 are free from the plunger rod, being above the level of the same as is also the cam 30 and there is no impediment to the rearward or reverse movement of the plunger and its rod and theyV are drawn quickly backward by the spring 13. As the plunger and rod move rearwardly under the action of the spring a constantly increasing resistance is oHiered to the movement of the plunger and its rod by the oil cushion, until the plunger is finally checked. Because of the fact that the slots through which the oil must escape from in front of the plunger or piston 19 to the rear thereof gradually decreases in capacity, there is a uniform increase in the resistance offered by the oil and the reverse movement of the plunger is checked without shock or jar.

At the moment the plunger is checked in its reverse movement `the cams 31 again come into action to drive the plunger forwardly and the cam 3() completes the action. Every time the plunger is withdrawn the feeding fork is operated to press the material out of the hopper into the baling chamber. The spring` prevents injury to the feeding fork and its supporting' mechanism in case there should be an obstruction in the material. When undue resistance is offered to the feeding stroke of the fork the spring will yield permitting the fork to move upward and to thus avoid injury. The tension of the spring mav be regulated by means of the adjustable stop 49.

The plunger and rod are guided in their movement by the flange wheels 25 moving on the guide rails 27 and by the roller 23.

'The wheels :25 are prevented from upward movement by means of guard plates 53 which are bolted to the tops of the extensions 3 and extend far enough inwardly to engage the wheels should they be lifted for any reason from the track rails. The bearings 5 have oil openings indicated at 54 for permitting the shaft at to be lubricated. As the material is baled it is forced out of the baling chamber at the end remote from the operating mechanism into four guides 55, the said guides being of angle material and engaging the corners of the bales. Any suitable mechanism may be provided for wiring or otherwise securing the baled material in bales.

It will be noted upon inspection of Fig. 5 that the cam 30 has a more abrupt outline than that of the cams 31. That is the cam 30 is formed on the arc of a circle of less radius than the arc of the circle upon which the cams 31 are formed. Hence the movement imparted to the plunger by the cam 30 is more powerful, although the said cam 30 moves the plunger a short distance in the same length of time than do the cams 31.

Because of this arrangement the preliminary movement of the plunger is quick, while the last part of its movement is slower but more powerful. The plunger is con trolled by a compound cam movement, composed of two cams of unequal radius. The arrangement of the cams is such that force is applied to the plunger to cause compression during five-sixths of the rotation of the shaft 4, while the usual press applies force to the plunger during only one-half or less of the movement of the operating shaft. A press of the ordinary character will require a motor capable of delivering eight to ten horse power while in the present press a motor delivering three horse power will be sufficient.

It will be understood that compression is exerted during' approximately live-sixths of the rotation of the shaft 1, and that any other suitable liquid or fluid may be used in place of oil, as for instance air, glycerin, or any other suitable material.

I claim:

In a. baling press, the combination with a baling chamber, the plunger movable longitudinally thereof, the plunger rod connected with the plunger and the spring for retracting the plunger, of power operated means for moving the plunger on the compression stroke, said means comprising a shaft journaled transversely of the chamber, the plunger having a plunger rod extending below the shaft and transversely thereof, said rod having a longitudinally extending` slot, a roller journaled in the slot at the end adjanaled coaxial on the plunger rod at opposite sides thereof, cams Secured to the shaft and engaging the last-named rollers to initiate the movement ofthe plunger on the compression stroke, and a cam for engaging the first-named roller and arranged to supplement the action of the rst named cam,

Same. v

CLARENCE L. NORTH.

Witnesses R. B. REDIC,v F. E. HUNTER.

- Copies ofV this 15a/centY may be obtained for ve cents each, by addressing the Commissioner of retenu.

' Washington, D. c, f. 

